题目内容

Which type is the most popular for the online courses during the COVID-19 period ( ).

A. Instant Messaging
B. Internet telephone
C. Video-Conferencing
D. Email

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Who would benefit from the advantages of fiber optics ( )?

A. Network architects
B. Soldier
Chef
Driver

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Electricity is applied to one end of the wires and it travels to the far end where it is received as a ( )?

A. voice.
B. information.
C. data
D. signal.

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Please select the correct statement which mention on the below ( )?

A. light travels a lot further than the constant EMP waves.
B. light degrades much higher than electricity does.
C. light upgrades much slower than electricity does.
D. the constant EMP waves travels a lot further than light.

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The reason why wires melting into a fine slag and becoming useless is ( ).

A. High temperature.
B. Over use.
C. Wire aging.
D. A, B and C.

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Which type is the most popular for the online courses during the COVID-19 period ( ).

A. Instant Messaging B. Internet telephone C. Video-Conferencing D. Email

Who would benefit from the advantages of fiber optics ( )?

Electricity is applied to one end of the wires and it travels to the far end where it is received as a ( )?

Please select the correct statement which mention on the below ( )?

The reason why wires melting into a fine slag and becoming useless is ( ).

A. Instant Messaging
B. Internet telephone
C. Video-Conferencing
D. Email